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技术原理

 
我们的产品主要基于如下光学技术:

a) 用于流体中的激光成像:
粒子成像测速(PIV)
激光诱导荧光(LIF)
激光诱导白炽光(LII)
米氏散射
瑞利散射
拉曼散射

b) 用于粒子成像:
阴影法测量
干涉米氏成像(IMI)

c) 用于液滴检测:
相位多普勒干涉技术(PDI)

d) 用于气体传感:
红外(IR) 吸收

e) 用于表面成像:
数字图像相关技术(DIC)

所有这些技术,从本质上都是非介入的,能够提供具有高的空间和时间分辨率的在线测量并且还具有远距离探测能力。


 
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Techniques

Optical measurement techniques are non-intrusive in nature and provide high resolution measurements in space and time with remote detection capabilities. Laser imaging measures in-situ a large number of flow variables such as density, temperature, species (particle) concentration and velocity. Short laser pulses freeze the motion of the flow, and high-speed imaging allows time-resolved measurements. Tomographic imaging techniques like Tomo-PIV and Tomo-LIF make 3-dimensional imaging possible.

LaVision’ s product portfolio is exclusively based on the following optical measurement techniques:

 
 
 

Laser Imaging in Flows, Sprays and Combustion:

  • Particle Image Velocimetry (PIV)
  • Laser Induced Fluorescence (LIF)
  • Laser Induced Incandescence (LII)
  • Mie Scattering
  • Rayleigh Scattering
  • Raman Scattering

Particle Imaging:

  • Shadowgraphy
  • Interferometric Mie Imaging (IMI)

 

Droplet Detection:

  • Phase Doppler Interferometry (PDI)


Gas Sensing:

  • Infra-Red (IR) Absorption


Dynamic Surface (Volume) Imaging:

  • Digital Image (Volume) Correlation (DIC, DVC)

 

 
 
 
 
 
 
 
 


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